HP fraud hotline
Call the HP fraud hotline (1-877-219-3183, toll-free in North America) when you install an HP print cartridge and the printer message says the cartridge is non-HP. HP will help determine if the product is genuine and take steps to resolve the problem.
Your print cartridge might not be a genuine HP print cartridge if you notice the following:
You are experiencing a high number of problems with the print cartridge.
The cartridge does not look like it usually does (for example, the orange pull tab is missing, or the packaging differs from HP packaging).
HP 3550 3700 HP fraud hotline